It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that Sayyiduna Umar bin Khattab (may Allah be pleased with him) said: If a slave woman gives birth to a child from her master, then the master should neither sell her nor gift her, nor can she come into the ownership of the master's heirs. Rather, as long as the master is alive, he may benefit from her, and when he dies, she will become free.